How to transform a vector into a string? [duplicate]

Answer 1

I'd use a stringstream to build the string. Something like:

std::vector::const_iterator it;
std::stringstream s;
for( it = vec.begin(); it != vec.end(); ++it )
{
    if( it != vec.begin() )
        s << " ";

    s << *it;
}

// Now use s.str().c_str() to get the null-terminated char pointer.